Door-hanger.



H. P. FRANKLIN.

DOOR HANGER.

APPLICATION FILED JULY 25, 1914.

Patented Mar.2,1915.

lA/E/VTUR WI T/V E 885 8 THE NORRIS PETERS CO.. PHcTc-LITHO'.,WASHINGTON, 0. C4

v UNITED STATES PATENT @FFTCE.

E'UBERT F. FRANKLIN, OF NEW YORK, N. Y., ASSIGNOR TO' RELIANCE BALLBEARING DOOR HANGER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEWYORK.

DOOR-HANGER.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed July 25, 1914. Serial No. 853,011.

To all whom it may concern Be it known that I, HUBERT F. FRANKLIN, acitizen of the United States, residing in the borough of Brooklyn of thecity of New York, in the State of New York, have invented certain newand useful Improvements in Door-Hangers, of which the following is aspecification, reference being had to the accompanying drawings, forminga part hereof.

This invention relates to devices for moving positively the separatorsused for spacing the usual ball or roller supports in traveling doors.

It has been the usual practice, where rolling elements are employed forthe support of traveling doors, to hold the rolling ele ments in spacedrelationship by means of separators or spacers which are formed toreceive the rolling elements and which are themselves impelled by therolling elements during movement of the door. It has been found thatwhere the balls, for instance, are relied upon to move the separator,the play of the balls in the tracks brings about a creeping of the ballswith the separators, with respect to the tracks, so that eventually thesupporting elements are moved out of their most effective positions.Then, too, when the balls and the separators thus creep along the trackthe carrier is apt to become jammed or, at least, the balls do not rollfreely with the traveling carrier, but move spasmodically and offervarying degrees of friction to the movement of the door, thus impairingits free anti-friction movement from open to closed position, or viceversa.

In accordance with the present invention the difiiculties recited aremet by providing a pinion which is connected to the separator and is inoperative engagement with preferably two racks, one of which is mountedon the corresponding carrier and the other of which is mounted injuxtaposition to a fixed part or other stationary object. The use of twosuch racks, arranged in the manner stated or in some equivalent manner,will probably be the preferred construction in order that the separatormay be assured an invariable positive movement at one half the speed ofthe movement of the traveling carrier on which, of course, is suspendedthe door.

. In the illustrated embodiment of the in- 5 vention a single travelingdoor mounted on a carrier which is disposed between two fixed tracks andis mounted on rolling balls, is shown.

Reference is now to be had to the accompanying drawings for a detaileddescription of the invention.

In these drawingsFigure l is a fragmentary view in front elevation of asingle traveling door equipped with the improved devices. Fig. 2 is aview in end elevation of so much of the structure as is shown in Fig. 1.Fig. 3 is'a sectional view taken on the plane indicated by the line 33of Fig. 1 and looking in the direction of the arrows.

In the construction illustrated, there are two fixed tracks a, 1;,having their proximate edges grooved longitudinally as at a, a, toreceive balls 6, between which is supported a moving carrier 0 on theupper and lower edges of which are also formed longitudinal grooves c,0', to receive the balls. From the carrier 0 is suspended a door (Z ofany desired form, as by hangers 0 The balls 6 are held in spacedrelationship by a separator e which may be of any approved form.

To the fixed track 0, is secured along the outer face thereof, a rack7", while along the outer face of the carrier 0 is secured a rack 9,these two racks being engaged operatively by a pinion e and being ofsuch length as to permit the required full movement of the door d whilemaintaining the engagement of the pinion with each of the racks at alltimes. The pinion e is secured to the separator e as through a threadedstud 6 engaging an upwardly extending flange e which may be formedintegral with the separator 6. It will noW be understood that movementof the carrier 0 through pressure applied to the door d imparts bodilymovement to the pinion 6 through its engagement with the racks g and 7",and that such bodily movement of the pinion 0 results in a correspondingmovement of the separator e and the balls I) with which the separatorengages. The speed of the bodily movement referred to is, by thearrangement employed, necessarily one half of the speed of the door sothat the separator e and the balls I) are maintained at all times insuch relationship to the carrier 0 as to present a most effectivesupport therefor. Moreover, positive movement of the separator e and ofthe balls 72 eliminates that free movement of the balls in the groovesa, a, and 0', c, which ordinarily occurs and which results in creepingof the balls With the separator along the tracks or jamming of theballs.

As pointed out hereinbefore, the invention is not to be limited in itsapplication to a'single traveling door, but may be employed equally wellwith two or more doors traveling at differential speeds, and where thedevices are employed under such circumstances, the actuating pinions forthe differential doors may serve in a dual capacity and be arranged todrive positively the separators, in the manner pointed out in thisspecification. Changes of this character and all other changes whichfall within the range of mechanical skill may be made without departingfrom the spirit of the invention, provided such changes fall Within thescope of the appended claims.

I claim as my invention:

1. In combination with a traveling door, a carrier therefor, a fixedtrack, anti-friction rolling devices interposed between the track andthe carrier, a separator for said anti-friction devices, and means tomove the separator positively at a predetermined speed during movementof the door.

2. In combination with a traveling door, a carrier therefor,anti-frictionudevices on whichthe carrier is slidably mounted, aseparator for the anti-friction devices, gearing connected to theseparator and a rack mounted on the carrier and in engagement with thegearing, whereby the separator is moved positively during movement ofthe carrier.

3. In combination with a traveling door, a carrier therefor, balls onwhich the carrier is slidably supported, a separator for the 7 balls, agear mounted movably with thejseparator, a rack carried by the carrierand a second fixed rack, the gear meshing with both of said racksat'all' times, whereby the separator is moved positively during move- 7ment-of the carrier and at a speed equal to one half of the speed of thecarrier. V

4. In combination with a traveling door, a carrier therefor, fixedtracks between which the carrier is 's lidably mounted, balls interposedbetween the carrier and each of the tracks, a separator for the balls, agear mounted on the separator, a rack 'fiXed to one of said tracks, anda secondrack secured to the carrier, the gear being in mesh with theteeth of both of said racks at all times, whereby movement of thecarrier brings about positive movement of the separatorat a speed equalto one half of the speed of the carrier. 7

This specification signed and witnessed this 24th day of July, A.D.'1914.

HUBERT F. FRANKLIN. V Signed in the presence of- V W. B. GREELEY, ELLAJ. KRUGER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

